/**
 * Copyright (C) 2012 Oleg Anastassov <o.anastasov@gmail.com>
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package kz.kstu.ent.business.server.impl;

import kz.kstu.ent.business.entity.Identifiable;
import kz.kstu.ent.business.server.context.AbstractServerContextManager;

import javax.persistence.EntityManager;

/**
 * @author Oleg Anastassov
 */
public abstract class AbstractService extends AbstractServerContextManager {

    protected EntityManager getEntityManager() {
        return getServerContext().getEntityManager();
    }

    public <T extends Identifiable> T save(T object) {
        if (object.getId() != null) {
            return getEntityManager().merge(object);
        } else {
            getEntityManager().persist(object);
            return object;
        }
    }

    public void remove(Class objectClass, Long id) {
        getEntityManager().remove(getEntityManager().find(objectClass, id));
    }
}
